part 4 -

Question 1

How is a concrete floor layered

Answer 1

Remove old floor
a hardcore (usually bricks) (MOT)
Sand blinding - sand with the thickness of 50mm - protects DPM from being punctured.
damp proof membrane
insulation
damp proof membrane
concrete - thickness of 100mm

Question 2

Whats the completing the installation process

Answer 2

Concrete slabs should dry completely before placing insulation boards.

The surface of the slab should be smooth, flat and free from projections.

bullet
The insulation boards should always be loose-laid and break-bonded, with joints lightly butted

bullet
If two layers of insulation are required, they should be horizontally offset relative to each other

bullet
A strip of insulation board (minimum 20mm thick) should be placed vertically around the perimeter of the floor in order to prevent cold bridging